It has been a minute since I've been to either of these places but I always enjoyed the mussels and pommes frites at Watel's. Whe I worked in the area, I would order them at lunch - not sure if they are on the dinner menu. Also, and this might be heresy for some, but I've also always enjoyed them at Oceanaire.

One place I did not care for them was at Toulouse (on Knox) but it was mainly due to their size. They were HUGE. I've never seen mussels so large in my life, although according to the waiter they were normal size for that specific type of mussel (whatever that was). They tasted okay but the size just detracted from my enjoyment - in fact after 3 or 4, I was over it.

Sapristi's in Fort Worth, 2418 Forest Park Blvd., FW 76110. They are closed on Mondays. Mussels are their specialty and they offer them steamed 6 different ways. It's one of my favorite restaurants in Fort Worth. Everything on their menu is excellent.